Geotel 40mg Tablet contains Telmisartan, an angiotensin II receptor antagonist primarily used in the management of hypertension. Telmisartan works by selectively blocking the binding of angiotensin II to the AT1 receptor found in various tissues, including vascular smooth muscle and the adrenal gland, thereby inhibiting vasoconstriction and aldosterone secretion. This mechanism results in vasodilation, reduced peripheral resistance, and ultimately, a decrease in blood pressure. Geotel 40mg is indicated for the treatment of essential hypertension to reduce the risk of cardiovascular events such as stroke and myocardial infarction. It may also be prescribed for patients with left ventricular hypertrophy or those at high cardiovascular risk who are intolerant to ACE inhibitors. The tablet is administered orally, with or without food, typically once daily, and dosage adjustments are based on patient response and tolerability. Common side effects may include dizziness, fatigue, and gastrointestinal discomfort, while serious adverse reactions are rare but can include hypotension and renal impairment. Caution is advised in patients with renal or hepatic dysfunction, and it is contraindicated during pregnancy. Regular monitoring of blood pressure, renal function, and electrolytes is recommended during therapy with Geotel 40mg Tablet.